I keep getting this error. but do I have more than 5.
You should have at least five li elements that are descendants of .main-section elements.
.
<section class="main-section"id="what_you_should_already_know">
<header>What you should already know</header>
<nav id="navbar">
<heade>What you should already know</header>
<a class="nav-link" href="#what_you_should_already_know"></a>
</nav>
<p>This guide assumes you have the following basic background:</p>
<ul class="list">
<li>A general understanding of the Internet and the World Wide Web (WWW).</li>
<li>Good working knowledge of HyperText Markup Language (HTML).</li>
<li>Some programming experience. If you are new to programming, try one of the tutorials linked on the main page about JavaScript.</li>
<li>other words</li>
<li>even more words</li>
</ul>
</section>
<section class="main-section"id="javaScript_and_Java">
<header class="header">JavaScript and Java</header>
<nav id="navbar">
<header>JavaScript and Java</header>
<a class="nav-link" href="#javaScript-and-Java"></a>
</nav>
<p> JavaScript and Java are similar in some ways but fundamentally different in some others. The JavaScript language resembles Java but does not have Java's static typing and strong type checking. JavaScript follows most Java expression syntax, naming conventions and basic control-flow constructs which was the reason why it was renamed from LiveScript to JavaScript.</p>
<p>In contrast to Java's compile-time system of classes built by declarations, JavaScript supports a runtime system based on a small number of data types representing numeric, Boolean, and string values. JavaScript has a prototype-based object model instead of the more common class-based object model. The prototype-based model provides dynamic inheritance; that is, what is inherited can vary for individual objects. JavaScript also supports functions without any special declarative requirements. Functions can be properties of objects, executing as loosely typed methods. </p>
<p>JavaScript is a very free-form language compared to Java. You do not have to declare all variables, classes, and methods. You do not have to be concerned with whether methods are public, private, or protected, and you do not have to implement interfaces. Variables, parameters, and function return types are not explicitly typed. </p>
</nav>
</section>
<section class="main-section"id="hello_world">
<header class="header">Hello world</header>
<nav id="navbar">
<header>Hello world</header>
<a class=nav-link href="#hello_world"></a>
</nav>
<p>To get started with writing JavaScript, open the Scratchpad and write your first "Hello world" JavaScript code:</p>
<code class="code">function greetMe(yourName) { alert("Hello " + yourName); }greetMe("World"); </code>
<code></code>
<p>Select the code in the pad and hit Ctrl+R to watch it unfold in your browser!</p>
</section>
<section class="main-section"id="variables">
<header class="header">Variables</header>
<nav id="navbar">
<header>Variables</header>
<a class=nav-link href="#variables"></a>
</nav>
<p> You use variables as symbolic names for values in your application. The names of variables, called identifiers, conform to certain rules</p>
<p>A JavaScript identifier must start with a letter, underscore (_), or dollar sign ($); subsequent characters can also be digits (0-9). Because JavaScript is case sensitive, letters include the characters "A" through "Z" (uppercase) and the characters "a" through "z" (lowercase).</p>
<p>You can use ISO 8859-1 or Unicode letters such as ĂĄ and ĂĽ in identifiers. You can also use the Unicode escape sequences as characters in identifiers. Some examples of legal names are Number_hits, temp99, and _name. </p>
</section>
<section class="main-section"id="declaring_variables">
<header class="header">Declaring variables</header>
<nav class="navbar" id="Declaring_variables">
<header>Declaring variables</header>
<a id="nav-link" href="declaring variables"></a>
</nav>
<p> You can declare a variable in three ways:</p>
<p> With the keyword var. For example,</p>
<code class="code">var x = 42.</code>
<p>This syntax can be used to declare both local and global variables. </p>
<p>By simply assigning it a value. For example,</p>
<code class="code">x = 42.</code>
<p>This always declares a global variable. It generates a strict JavaScript warning. You shouldn't use this variant. </p>
<p>With the keyword let. For example</p>
<code class="code"> let y = 13.</code>
<p> This syntax can is be used to declare a block scope local variable. See Variable scope below.</p>
</section>
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